Curvy Areas- because every maths teacher needs NRich Maths

If you haven’t seen the NRich Maths website where have you been?! It’s a fantastic source of enriching activities. It’s usually my first port of call when I’m looking for ‘something a bit different’ for my own classes. Many of the resources are interactive and look great on the interactive white board.

Each month NRich publishes a ‘virtual magazine’ which features some puzzles. You can get your classes working on the puzzles and they can submit their solution to the website. The following month lots of the submitted solutions to the previous month’s puzzles are published on the site. I have had a solution of one of my classes featured on the site quite a few times.

One of the puzzles that caught my eye this month was ‘Curvy Areas‘. Check out the graphic below:

Curvy Areas from NRich Maths

First you could have a class discussion about how the image was constructed. Next you could get the kids to try to reconstruct the image. Then, if they’re familiar with pi and calculating the area of circles you could get them to calculate what proportion (or just what area) of the diagram is red, orange, yellow, green and blue…

A lovely activity that can span the ability ranges.

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2 Responses

  1. This is just to draw your attention to a page

    where additional properties of this circle subdivision have been discussed. Importantly, the curvy pieces not only have equal areas but also equal perimeters. A really remarkable construction.

  1. 13/11/2011

    […] encountered this image on William Emery’s ‘blog (Twitter:  @Maths_Master) who made some comments on a puzzle posted at Nrich […]

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